SSC JE Mechanical Engineering 29th Jan 2018 Shift-2

Instructions

For the following questions answer them individually

Question 151

The chisel used for cutting steel sheets is usually

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Question 152

______ material show direction dependent properties.

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Question 153

______ affect the fatigue strength least.

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Question 154

All mechanical seals have two flat sealing surfaces

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Question 155

The percentage of carbon that must be present in steel before it can be hardened noticeably is

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Question 156

The commonly employed cutting fluid for turning and milling operations on alloy steels is

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Question 157

In electro discharge machining, the erosion of metal is achieved

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Question 158

Bore diameters can be measured while working

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Question 159

An important precaution in filing is

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Question 160

Surface finish produced by electrochemical grinding on ‘Tungsten carbide’ can be expected to be of the order of ______ micron.

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